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(11)

EP 4 816 170 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24820961.1 (22) Date of filing: 29.11.2024

(51) International Patent Classification (IPC):  B32B 27/34(2006.01) C08L 77/02(2006.01) C08K 3/04(2006.01) F17C 13/00(2006.01) (52) Cooperative Patent Classification (CPC): B32B 27/34; C08K 3/042; F17C 2203/0675; F17C 2221/012; F17C 2223/0123; B32B 2597/00; Y02E 60/32; B32B 1/08; B32B 27/18; B32B 7/12; B32B 2262/101; B32B 5/02; B32B 15/18; B32B 19/043; B32B 27/12   C-Sets: C08K 3/042, C08L 77/02; (86) International application number: PCT/EP2024/084201 (87) International publication number: WO 2025/114589 (05.06.2025 Gazette 2025/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 29.11.2023 SE 2351368 (71) Applicant: Graphmatech AB 753 18 Uppsala (SE)	(72) Inventor: ZOUAOUI, Amine 753 18 Uppsala (SE) (74) Representative: Brann AB  P.O. Box 3690 Sveavägen 63 103 59 Stockholm 103 59 Stockholm (SE)